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The variances are squared so that all deviations above and below the mean become positive values. Taking the square root of the variance then gives a measure of the differences from the mean: the standard deviaton.
Squaring the deviations also makes the bigger differences stand out. Look at 100 squared vs 10 squared.
What else can I help you with?
Using a pooled sample estimator for sigma squared assumes the two populations have what?
equal variances
What does activity-level variances plus flexible-budget variances equal?
total master-budget variances
Should only unfavorable variances be investigated?
No, both unfavorable and favorable variances should be investigated. While unfavorable variances indicate areas where performance is lacking and may require corrective action, favorable variances can highlight opportunities for efficiency and best practices that can be leveraged further. Analyzing both types of variances provides a comprehensive understanding of performance and can inform better decision-making.
What are adverse variances?
Adverse variances means unfavourable variance which is actual expenses are more than budgted variance.
Should all variances be investigated?
Not all variances should be investigated; the decision depends on their significance and impact on operations. Material variances that exceed a certain threshold or have substantial financial implications should be prioritized for investigation, while minor variances may not warrant the same level of scrutiny. A systematic approach, such as focusing on variances that deviate from expected performance or trends, helps allocate resources effectively. Ultimately, the goal is to identify actionable insights that enhance performance without overwhelming the analysis process.
Using a pooled sample estimator for sigma squared assumes the two populations have what?
equal variances
In the calculation of variances why are they squared?
Try calculating the variance without the squaring bit - it gives 0 every time. Squaring allows you to ignore the direction (sign) of the number.
What does activity-level variances plus flexible-budget variances equal?
total master-budget variances
The variances that should be investigated by management include?
should all variances be investigated
When comparing two variances or standard deviations is an f-test is used?
An F-test can be used for variances.
Should only unfavorable variances be investigated?
No, both unfavorable and favorable variances should be investigated. While unfavorable variances indicate areas where performance is lacking and may require corrective action, favorable variances can highlight opportunities for efficiency and best practices that can be leveraged further. Analyzing both types of variances provides a comprehensive understanding of performance and can inform better decision-making.
What are adverse variances?
Adverse variances means unfavourable variance which is actual expenses are more than budgted variance.
What is unit square?
Square units measure area.
Should all variances be investigated?
Not all variances should be investigated; the decision depends on their significance and impact on operations. Material variances that exceed a certain threshold or have substantial financial implications should be prioritized for investigation, while minor variances may not warrant the same level of scrutiny. A systematic approach, such as focusing on variances that deviate from expected performance or trends, helps allocate resources effectively. Ultimately, the goal is to identify actionable insights that enhance performance without overwhelming the analysis process.
Why are separate price and quantity variances computed?
Price and quantity variances are computed respectively because different managers are usually responsible for buying and for using inputs.
Which is the correct set of assumptions needed for comparing 3 or more means?
Equal variances, independent observations and normality
Why are variances generally segregated in terms of a price variance and an efficiency variance?
Efficiency Varian materials and direct labor, the variances were recorded in specific general ledger accounts.
